Neonatal Med.  2023 May;30(2):21-27. 10.5385/nm.2023.30.2.21.

What Factors Delay Interatrial Communications Closure in the Oval Fossa?

• Lee SH
• Seo MK
• Park GY
• Kim SS

• KMID: 2542543
• DOI: http://doi.org/10.5385/nm.2023.30.2.21

Keyword

Heart septal defects, atrial; Foramen ovale, patent; Prognosis; Infant, newborn

Figure

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  Figure 1. Morphological subtypes of secundum atrial septal defect (ASD) in the center of the oval fossa. (A) The ASD is located within the true septum. The defect margin is clear cut, and the shunt flow and interatrial septum (IAS) are almost vertical. (B) The patent foramen ovale is a tunnel-like passageway between the free edge of the overlapping ovale fossa valve and its muscular rim. This type includes cases in which adhesion does not occur or a shunt occurs due to a stretched secondary septum. Shunt flow and IAS angle is less than 90°. (C) If there are more than two holes, the patient is classified as having multiple holes. Arrow points left-to-right flow imaging by color Doppler. Abbreviations: LA, left atrium; RA, right atrium.

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  Figure 2. Enrollment of the study group. NICU, neonatal intensive care unit; IAC, interatrial communication.

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  Figure 3. Receiver operating characteristic curve showing that the optimal cut-off value for predicting spontaneous interatrial communication closure was 3.05 mm. Abbreviations: AUC, area under the curve; CI, confidence interval.

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